Immigrants rights advocates and employers, including farmers, are lashing out at the Supreme Court’s May 26 decision upholding Arizona’s right to demand employers use the controversial e-Verify system, which is meant to confirm whether someone is in the country legally.

The decision also allowed Arizona to continue the so-called “business death penalty,” which entails denying a business license to employers found guilty more than once of violating a 2007 law against hiring undocumented workers.

The e-Verify system has been widely criticized for errors, including flagging legal and native-born residents as undocumented. That’s among the reasons Illinois sought to ban its use by private employers. A federal court shot down those efforts, but the Illinois legislature did pass a state law trying to safeguard against the misuse of the system.

All employers with federal contracts are required to use E-Verify, and Texas Republican Congressman Lamar Smith is among those pushing to make it mandatory nationally.

Immigrants rights groups are allied with employers – even those that they allege exploit undocumented immigrants – in stridently opposing mandatory e-Verify use. The Supreme Court decision was the result of a lawsuit filed by the Chamber of Commerce opposing Arizona’s law. The U.S. Chamber of Commerce and other employer groups also sued unsuccessfully over the mandate that E-Verify be used by federal contractors. Florida has proposed a bill similar to Arizona’s regarding E-Verify. The Hispanic Chamber of Commerce opposes it.

Agricultural employers and immigrants rights groups point out that the nation’s guest worker program and overall immigration system are so badly broken that agricultural growers will simply not be able to find the needed employees especially during harvest times if they really are barred from hiring undocumented workers.

Lynn Tramonte, deputy director of the group America’s Voice Education Fund, said in a press release:

Yesterday’s Supreme Court ruling is a dagger in the heart of Arizona agriculture. If this type of law spreads nationwide, we will essentially deport the entire agriculture industry—including jobs held by Americans—and be forced to import more of our nation’s food supply. Passing a mandatory E-Verify law without comprehensive immigration reform will kill American jobs and farms, burden small businesses, reduce tax revenue, and drive undocumented workers further underground.

U.S. Agriculture Secretary Tom Vilsack made similar points in an op-ed:

As Secretary of Agriculture I have met farmers and ranchers all over the country who worry that our immigration system is broken. They are unable to find the necessary number of farmworkers and sometimes struggle to verify their work authorization papers – all while wondering if they’ll have enough help for their next harvest.

And while some American citizens step up and take these jobs, the truth is that even when farmers make their best efforts to recruit a domestic work force, few citizens express interest, and even fewer show up to spend long hours laboring in the hot sun.

In a twist on the misguided idea that immigrants “steal” American jobs, Vilsack described immigrant farm workers essentially protecting U.S. jobs through their crucial role on U.S. farms:

If American agriculture lost access to adequate farm labor, it could cost the industry as much as $9 billion each year. Already, some American producers are opening up operations in Mexico. So we must take action to prevent the further outsourcing of farm-related jobs.

Meanwhile, the Bay Citizen nonprofit news outlet described how lucrative wineries in Napa Valley, Calif., have found it in their own self-interest to treat undocumented workers fairly, rather than paying them as little as possible or sometimes not at all as is often the case in agriculture and other industries that hire large numbers of undocumented workers.

Without migrant labor, most of it from Mexico, the wine producers in Napa would be hard pressed to fill a carafe, much less the valley’s nine million annual cases. Experts estimate that 8,000 to 12,000 illegal migrants reside (often seasonally) in Napa, although the number is impossible to confirm.

Ten years ago, they could be found living in the woods in makeshift camps, sleeping on fetid mattresses and drinking from dirty streams. Today they receive subsidized housing, or can reside in three tidy dormitory complexes near St. Helena and Yountville where up to 180 workers pay $12 a day for room and board.

This Blog Originally appeared in These Working Times on May 30, 2011. Reprinted with Permission.

About the Author: Kari Lydersen is an In These Times contributing editor, is a Chicago-based journalist whose works has appeared in The New York Times, the Washington Post, the Chicago Reader and The Progressive, among other publications. Her most recent book is Revolt on Goose Island. In 2011, she was awarded a Studs Terkel Community Media Award for her work. She can be reached at kari.lydersen@gmail.com.